Cutter-head mechanism



Patented May 2, 1922.`

ATTORNEY -J. B. ETTINGER, DECD. G. A. ETTINGER, ADMINISTRATRIX.

cumza um mscHANxsM. APPLICATION FILED JUNE l. 192|.

, Patented May 2, 1922,.

5 smits-suur 2.

l ATTORNEY 1. B. ETTING DECD. G. A. ETTlNGE. A lsrRATnlx. CUTTER HEAD MECHANISM.

APPLl-cATloN FILED JUNE 1. 192|. 'Patented May 2.1922 5 sums-SHEET 3.

i w w 2 22) 2% estate of Joe( E fzvzgev Deceased- J. B. ETTINGER, DECD. G. A. ETTINGER, ADMlNlsTnAmx. CUTTER HEAD MECHANlSlVl.

5 SHEETS-SHEE 4.

Patented May 2, 1922.

APPLICATION FILED IUNE I. 1921.

|NvENToR Grace H. ftinger dmim'stmtrx of estate of doel [Hnger Deceased. W` l ATTORNEY l I. ETTIIIGEII,

G. A. ETTVINGER, ADM! 'Patented May 2,1922. s SHEETS-SHEET 5 D NIS CUTTER HEAD MECHANISM. APPLICATION FILED IuNE I. 1921.

y estate uf doe( ft'nger Deceased.

ATTORNEY .clamping a tool,

i of the invention.

'r ras *ers JOEL B. nfr'rrivcfnn, nncnasnn, Lerner PORTLAND, omi-Gori, BY simon a. nrfrrnenn,

ADMINISTRATRIX, or PORTLAND, oniieoiv. v I y GUTTER-HEAD 'iaiioirenisilr imanes.

, Specification of Letters Patent. i -Patemtedrpgby 2 1922.

Application filed June 1, 1921. Serial No. 774,191. l

To all whom t may concern:

Be it known that Joni. B. ETTINGER, a citizen of the United States of America, late of Portland, in the county of Multnomah and State of Oregon, invented certain new and useful Improvements in Cutter-Head Mechanism, of which the following is a specification.

My invention relates to cutter-head mechanisms, being applicable more particularly to the types 'of cutter-heads employed in woodworking,

grooving, and the like, and it has for one of its principal objects to afford a practical,

eliicient and readily operated arrangement .of parts `for accurately centering and tightly clampingthe head on its supporting spindle.

Another purpose of the improvement is to provide mechanism forv clamping a tool on a cutter-head at an angle to the plane of travel of the head, and permitting adjust ment of the tool both lengthwise oi. itself and at rightangles to said plane of travel.

A .further object'ot the invention lies in the ,provision of simple mechanism i'or whereby the tool is ada-Hdetachable clamping engaged by retaining head and is adjustable oi' positioning devices justably f held by which is laterally by means within the head.

,Still other purposes and advantages ofv the invention will appear from the following 'detailed description, inconjunction with the accompanying drawing` the novel features being pointed out in the claims at the end of the description.

In the drawings I:

Figure 1 is a plan view of a cutter-head, showing applied thereto ajpreferred. form Y Figure 2 is a side elevationofthe same. Figure 3 is a sectional view on line SH3 of Figure 1, showing the position oftheV parts when the tool is clamped.

Figu showing the re 4- is a similar view,

y position of the parts -when loosened tofperv mit adjustment of the Y l 4" Figure 5 is a View in elevation of a portion tool.

offthe cutter-head, showing the clamping member withl the tool omitted. l Y

Figure `6 is a perspective view of the clamping-member'. Y ,Y

Figure? isa sideelevation of the clampingmemben u as Jfor constructing moldings,

" of Figure 14.

ether modication oi with the invention adapted thereto.` y

view, taken centrally through the cutter-liead'iand its sixteen tools. vIt will 'urea a and' 4 atV an: 'angle tojthe'plane` in which the head,

Figure is a-bottom' plan view of thev positioning sleeve.

Figure 13 is a side elevation of the lock ing bolt. p n

Figure 14: is al plan view, illustrating the application of the invention to a slightly different form vof Aci'itter-h'ead.

Figure 15`is a sectional view on line 15-15 Figure 16 is apartial plan. view, illustrating the ,invention as applied'lto another form ottool andV cutter-head.

. 'Figure 18 is a'sectional view of still ane cutter-head and tool,

Figure 19 is a verticalsectional supporting spi dle, with parts appearing in elevation.

Figure 2O Yis` a l.Figure .21 is a side. elevation of one of the clan'iping keys.

` Figure'22 is a front endl' i. v Y

VFigure 23 is a detaili sectional View of the actuator kfor the clamping keys. n A This invention is applicable to Yvarious types of cutter-heads for dil'erent purposes, and in disclosing it in this application as adapted to woodworking cutter-heads, Yno intention oi limiting the field of the invention, but it is to be yunderstood that this disclosure isy intended lmerely vto show elevation of the same,

`several practical examples of the many various possible adaptations.l

lReferring to the construction illustrated in Figuresl to 13 inclusive, v1 designates the `cutterfhead as Y ln'ately arranged flat surfaces 2 and 3 upony a whole, provided with altern Y horizontal sectional rView on thef'line 20-'-2O oi?l Figure 19.

`75 p Figure 17 is a sectional view on line 1'? 17' of AFigure 16.

I have i ios which the vtools 4 are inounted,this particu-"-" lar y'itorrn foi cutter-head being' adapted for beobse'rved from Figthat 'each tool is arranged .ilo

travels or rotates, and this disposition of the tools provides maximum clearance-.for each tool,gives a clean and eiicient cutting operation, and vmakes it possible for each tool to be ground and utilized until but a very small portion remains, thus resulting ina factor of considerable economy; Furthermore, the disposition of the tools at an angle as just described, and the means by which they are held in place, lend toward readily adjusting a tool either lengthwise lof itself or laterally ofthe head, rand also quickly removing or clampingitV in place. Iv will now describe the parts by which each tool is heldin position.

Referring to Figures 2 to 13, the tool 4 is provided on its inner face with a recess 5, having undercut vportions with inclined sur-y faces 6 for cooperation with the tool clamping member. The recess 5 extends preferably from one end of the tool to the other, permitting a relative sliding motion thereof on the clamping member, whereby the tool is adjustable lengthwise of itself` The tool clamping member includes a body portion 7 and a tool engaging portion 8 arranged at an angle to the body portion, so

as to enable positioning and retaining the body portion parallel to the ,top and bottom ymember extends surfaces of the head while maintaining the tool at anangle thereto, or to the plane of travel of the head. The tool engaging portion embodies lateral flanges or. lips which interlock with the vundercut portions of the recess 5 in .the tool, they inner surfaces of Vsaid lips beingY inclined as lshown at 9, for

engagement with the corresponding surfaces 6 of the tool, whereby when the clamping member is drawn into the head, as will appear presently, it exerts a firm gripping action on the tool. L Y

The body portion of the tool clamping preferably into an opening 10 providedv in the head, and is there engaged by retaining means, adjustable in the head, so as to holdthe clamping 'member in engagement with the tool, and also per- 'Ifnit yadjustment of the clamping member and tool at right angles to the plane of rotation fof the head.

The retaining means for the tool clamping member may be constructed in various ways, and as an illustration, I have dise closed one possible form consisting of Yp0- `sitioning devices which serve to effectk theV lateral adjustment and a lockingrdevice which cooperates with 'the tool clamping member and the `c'ornplrsh this,

positioning devices. To ac- I employ an` eXtferiOIly threaded sleeve 11havin'g threaded engage- 'ing member.' The opposite side 'of the 'tool yclamping member isy engaged by ajsleeve i2 which lis threaded ijn a corresponding opening in the head. Thesleeve 12 has an extended and squared end 13, projectingbeyond the head and byV which it can be adjusted, while the sleeve 11 has opposite reoesses 14V to receivev a keyby which it can be adjusted.

VvThe lateral position of the tool clamping member is determined by the positioning sleeves just described, and which are turned so as to move both a corresponding distance in the same direction when it is desired'to adjust the tool laterally. The tool yclamping member is then locked by a'bolt 15, which passes through the sleeve 11 and has thread ed engagement with an opening inthe sleeve 12. VThe locking bolt 15 includes atapered locking portion 16, which engages a .tapered Opening 17 inthe body portion of the tool clamping member, so that vas the locking bolt is turned inwardly, its locking portion, by engagement with the tapered opening in the toolrclamping member, draws the latter to- A ward the/center of the head thereby grip-` ping the tool securely against the outer face of the headva's shown in Figure 3. In order to insure an effective locking engagement between the bolt 15 and the tool clamping member, the tapered opening 17 is arrangedV eccentrically to a slight degree with refern.ence to the center of the locking bolt and its tapered locking portion, thus affording'a slight clearance between the outer surfacesV the desired position laterally of the head.` l

The positioning sleeves are then turned until they are' in contact with'the tool clamping member, whereupon the locking bolt is turned to grip the tool clamping member.

In Figures 14 and 15, there is illustrated a cutter-head wider than the one previously described, and designed for carrying molding tools or cutters 20 and 21, arranged on the surfaces 22 and 23 of thekhead.; With a construction of this type, in order to provide for the necessary adjustmentk of bothrpos-l tioning sleeves, thevsleeve 24 is,l formed asy partof an elongated bolt 25,'eXtending to the` outer surface of the head and provided with asquared `adjusting end 26. Y l r Figures 16 and 17 illustrate a modified ar- Y Y ing devices, preferably in engaged by a locking bolt 32, these parts eooperating in the same manner as already d escribed. 33 is a positioning sleeve disposed in an opening in the head, and located between and in contact with the tool clamping members |The sleeve 33 is interiorly threaded to receive the threaded ends or .the bolts 32, which latter pass through the sleeves 34. By loosening the positioning sleeves 34, the tool clamping members 31 can be adjusted laterally to any desired point, .it being understood that the inner positioning sleeve 33 serves to maintain a iixed distance between the tool clamping members, and necessarily moves with them When they are adjusted in one direction or the other. The Vdesired lateral adjustment of the tool clamping members and of the tool 30 is then maintained by tighteningthe sleeves 34.

ln applying the invention to a narrow cutter-head, such as employed With tools used in forming lap joints, a construction like that illustrated in Figure 18 would be employed, the clamping member 40 being held in the desired position or lateral adjustment by means of the positioning rings 41.

The cutter-head is mounted on a spindle 45, see Figure 19, by mechanismthat enables quickly centering the head, and locking it firmly, To accomplish this, l employ a plurality of independent, removable clamparranged between the spindle and the head, and -held in proper relationship bypsitioning means which serves to guide the clamping devices to final clamping position. The clamping keys have movement longitudinally of the supportingspindle, and laterally of the positioning ymeans as they are actuated to clamping position and thus insure the correct centering oif the head on the spindle.

These several. ends are attained by employing positioning means in the torino-t a sleeve 46, the lower portion oit vvhich entends betvveen the spindle 45 and the head 1. The sleeve 46 carries a nut 47 at its lower end, upon which rests the head 1, While 48 is a cylindrical end piece attached to the upper end et the sleeve, and carrying an adjustable post 49 'which engages the upper end ot the supporting spindle. The sleeve 46 is provided vvith a plurality of slots 50 cut entirely through the sleeve, and adapted to receive the clamping devices yor keys 51. Each clamping key includes a longitudinally straight surface 52, for engagement with the spindle, and a longitudinally inclined surface 53 for engagement With a correspondingly inclined surface on the head.

Thus, by moving the clamping keys length- Wise into the head, they serve to bring about an accurate centering of the head, as the position of the head on the spindle depends entirely upon the thickness and accuracy or' the clamping keys, While the positioning the form ot keys., y

vWith said sleeve serves only to maintain the clamping keys in their proper longitudinal relation on the spindle. Various means may be provided for eiiecting the necessary movement ot the clam-ping keys, and one successrul vvay ot accomplishing this is by means or an actuator, in the term or a ring 54, threaded on the positioning sleeve 46, and provided with an interiorly arranged annular recess 55. Each ot the clamping keys is provided With a lateral extension or lug 56, which projects into the annular recess 55, so that as the actuator 54 is turned in one direction or the other, it carries with it the several clamping keys. As the latter are moved inwardly oi? the cutter-head, and longitudinally of the spindle, they are also forced laterally of the positioning sleeves 46, by reason of the straight and inclined surfaces on the spindle and head respectively, and this action is continued until artigli lit is had. This mechanism enables a cutter-head to be mounted on a spindle with great rapidity, While 'at the same time it insures centering the cutterhead with extreme `accuracy in relation to the spindle.

TWhile l have described the invention With reference to certain particular applications, it is to be understood as susceptible or various othei-.modiiications Without in any sense departing from the underlying principles set forth, land this application is intended to cover any other forms oi' Vthe improvements that may fairly come'vvithin the scope of the following claims.

l claim:

l. The combination with arutter-hearb ot ,a tooha toolclamping member adjustably engaging the tool, adjustable positioning dej. vices arranged in the head on opposite sides ot the tool clamping member, the latter having a transverse tapered opening therein, and a locking bolt passing through one of said positioning devices and having threaded engagement with the other ot said positioning devices, the locking bolt having a tapered locking portion engaging the aforesaid tapered opening.

2. The combination with a cutter-head, of a tool having recess in its inner tace, said recess having undercut portions. a tool clamping member including a tool engaging portioncooperating With said recess, flanges on the tool engaging portion. cooperating undercut portions or the recess, said flanges and undercut portions having -cooperating inciined surfaces, the tool clamping member also including a body portion eX- tending into the head and having a tapered transverse opening, and a locking bolt adjustable in the head and having a tapered locking portion engaging said tapered opening, the tool engaging portion being arranged at an angle to the body portion of the tool clamping member, and devices for adjusting the tool clamping member and the tool at right angles to the plane of travel of the head.

3. The combination with a cutter-head, of

a tool, a tool clamping member adjustably engaging the tool, adjustable positioning devices for the tool clamping member arranged in the head on opposite sides of and cooperating with the tool clamping member, and a locking member' engaging said positioning devices and cooperating with the tool clamping member for retaining the latter in adusted position. e

4. The combination with a cutter-head, of a tool, ,a tool clamping member including a tool engaging portion arranged at an acute angle to the plane of travel ofthe head and a body portion arranged at an angle to Vsaid tool engaging portion and parallel to the plane of'travel of the head, the body portion extending into the head and having` a tapered transverse opening, a locking bolt adjustable in the head and having` ya tapered locking portion engaging said tapered opening, and

devices for adj usting the tool clamping member and tool at right angles to the plane of travel of the head.

5. The combination with a cutter-head, of a tool, atool clamping member comprising a body portion and a tool engaging portion arranged at a slight angle thereto, the tool engaging portion extending at a slight angle fto the` plane of ytravel of the head and the body portion extending parallel to the plane of travel of the head, adjustable positioning sleeves located in the head on opposite sides of said body portion of the tool clamping member, the body portion of the tool clamping member having a tapered opening therein, and a locking bolt engaging said positionv ing sleeves and having a tapered locking portion arranged eccentrically of said tapered opening in the tool clamping member' and cooperating therewith to lock the latter.

6. The combination with a cutter-head, of a tool, a tool clamping member adjnstably engaging the head andY having a tapered opening arranged transversely thereof, po-

sitnminiq.` sleeves adjustably arranged in the of the head while the tool is arranged at an Y angle thereto in accordance with the angle of the tool engaging portion,v and means forv adjustably locking the tool clamping member in different positions laterally of the head. o Y Y 8. The combination with a cutter-head, of a tool, a tool clamping member including a body portion extending into the head, posi'- tioning devices for the tool clamping member adjustablein the head on opposite sides of saidbody portion, and a looking member adjustably secured to said positioning Vdevices and cooperating with the body portion of the tool clamping member.

In witness whereof, l have hereunto signed my name.V

GRACE A. ETTINGEB,

Adminis rwtrz' of tz'nger, deceased.

the estate of Joel B. Et- 

